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    <title>Document</title>
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    <script>

        //创建类 class 创建一个 明星类
        class Star {
            constructor(uname, age) {
                this.uname = uname;
                this.age = age;
            }
            sing(song) {
                // console.log("我唱歌");
                console.log(this.uname + song);
            }
        }

        //利用类创建对象 new
        var ldh = new Star("刘德华", 18);
        var zxy = new Star("张学友", 20);
        console.log(ldh);
        console.log(zxy);
        ldh.sing("冰雨");
        zxy.sing("李香兰");
    </script>
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